com.github.bordertech.wcomponents.examples.PatternValidationExample Maven / Gradle / Ivy

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package com.github.bordertech.wcomponents.examples;

import com.github.bordertech.wcomponents.ActionEvent;
import com.github.bordertech.wcomponents.WButton;
import com.github.bordertech.wcomponents.WContainer;
import com.github.bordertech.wcomponents.WFieldLayout;
import com.github.bordertech.wcomponents.WHorizontalRule;
import com.github.bordertech.wcomponents.WMessages;
import com.github.bordertech.wcomponents.WMultiTextField;
import com.github.bordertech.wcomponents.WPanel;
import com.github.bordertech.wcomponents.WPhoneNumberField;
import com.github.bordertech.wcomponents.WTextField;
import com.github.bordertech.wcomponents.validation.Diagnostic;
import com.github.bordertech.wcomponents.validation.ValidatingAction;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

/**
 * Demonstrate how patterns can be used to validate text fields.
 *
 * @author Jonathan Austin
 * @since 1.0.0
 */
public class PatternValidationExample extends WContainer {

	/**
	 * Width of labels.
	 */
	private static final int LABEL_WIDTH = 25;

	/**
	 * Construct the example.
	 */
	public PatternValidationExample() {
		final WMessages messages = new WMessages();
		final WTextField textField = new WTextField();
		final WPhoneNumberField phoneNumberField = new WPhoneNumberField();
		final WMultiTextField multiTextField = new WMultiTextField();

		add(messages);

		WPanel applyPanel = new WPanel();
		add(applyPanel);

		WFieldLayout applyLayout = new WFieldLayout();
		applyLayout.setLabelWidth(LABEL_WIDTH);
		applyPanel.add(applyLayout);

		final WTextField pattern = new WTextField() {
			@Override
			protected void validateComponent(final java.util.List diags) {
				super.validateComponent(diags);
				if (!isEmpty()) {
					try {
						Pattern.compile(getText());
					} catch (PatternSyntaxException e) {
						diags.add(createErrorDiagnostic(
								"Invalid pattern syntax (" + e.getMessage() + ")"));
					}
				}
			}
		};
		applyLayout.addField("Pattern for the text fields", pattern);

		WButton apply = new WButton("apply");
		add(apply);
		applyPanel.setDefaultSubmitButton(apply);

		apply.setAction(new ValidatingAction(messages.getValidationErrors(), applyLayout) {
			@Override
			public void executeOnValid(final ActionEvent event) {
				String regex = pattern.getText();

				textField.setPattern(regex);
				textField.getLabel().setHint(regex);

				phoneNumberField.setPattern(regex);
				phoneNumberField.getLabel().setHint(regex);

				multiTextField.setPattern(regex);
				multiTextField.getLabel().setHint(regex);
			}
		});

		add(new WHorizontalRule());

		WPanel fieldsPanel = new WPanel();
		add(fieldsPanel);

		WFieldLayout fields = new WFieldLayout();
		fields.setLabelWidth(LABEL_WIDTH);
		fieldsPanel.add(fields);

		fields.addField("Text Field", textField);
		fields.addField("Phone Number", phoneNumberField);
		fields.addField("Multi Text", multiTextField);

		WButton validate = new WButton("Validate");
		add(validate);
		fieldsPanel.setDefaultSubmitButton(validate);

		validate.setAction(new ValidatingAction(messages.getValidationErrors(), fields) {
			@Override
			public void executeOnValid(final ActionEvent event) {
				messages.success("All the fields are valid.");
			}
		});

	}
}